U.S. vs. Russia: What a war would look like between the world’s most fearsome militaries

Early on the morning of Sept. 30, a Russian three-star general approached the American embassy in Baghdad, walked past a wall of well-armed Marines, to deliver face-to-face a diplomatic demarche to the United States. His statement was blunt: The Russia military would begin air strikes in neighboring Syria within the hour — and the American military should clear the area immediately.

It was a bout of brinksmanship between two nuclear-armed giants that the world has not seen in decades, and it has revived Cold War levels of suspicion, antagonism and gamesmanship.

With the launch of airstrikes in Syria, Russian President Vladimir Putin instigated a proxy war with the U.S., putting those nation’s powerful militaries in support of opposing sides of the multipolar conflict. And it’s a huge gamble for Moscow, experts say. “This is really quite difficult for them. It’s logistically complex. The Russians don’t have much in the way of long-range power projection capability,” said Mark Galeotti, a Russian security expert at New York University.

Moscow’s military campaign in Syria is relying on supply lines that require air corridors through both Iranian and Iraqi air space. The only alternatives are naval supply lines running from Crimea, requiring a passage of up to 10 days round-trip. How long that can be sustained is unclear.

That and other questions about Russian military capabilities and objectives are taking center stage as Putin shows a relentless willingness to use military force in a heavy-handed foreign policy aimed at restoring his nation’s stature as a world power. In that quest, he has raised the specter of resurgent Russian military might — from Ukraine to the Baltics, from Syria to the broader Middle East.